Improvement in portable calendars



UNITED STATES PATENT OFFICE.

J. N. DUDLEY, OF MITCHELL, IOVA."

IMPROVEMENT IN PORTABLE CALENDARS.

T0 all whom may concern:

Be it known that I, J. N. DUDLEY, of Mitchell, in the county ot' Mitchell and State of Iowa, have invented a new and Improved Calendar; and I do hereby declare that the following is a full, clear, and, exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l shows the improved calendar complete. Fig. 2 is a longitudinal section through Fig. l. 3 is an end view of the calendar-stem. Fig. l is a view showing the arrangement ot' the months and days.

Similar letters of reference indicate corresponding parts in the severa-l gures.

The object of this invention is to produce a simple and cheap calendar which may be readily applied to a pencilcase, match-box, to the head of a cane, watch-seal, key, or other similar articles, and made highly ornamental and convenient for finding the days of the month.

My invention consists in combinii'ig together a number of sliding rings having the year and names ot' the months and names of the days of the week suitably printed or stamped on them, with a column ot' numerals which will, when suitably arranged on a stem ina proper relation to the rings aforesaid, indicate the days ot' the month, all as will be hereinafter fully explained.

lo enable those skilled in the art to fully understand my invention, I will proceed to describe its construeiii'nl and operation.

A represents a siem which receives the combination oli' rings hereinafter to be described. This stem maybe made round or septilateral, and it may be made of any desirable size. The stem A may iorm the head of a walking-cane, pocket inkstand or matchsafe, watch-seal, key, or any like article. On this stem, which in the drawings is septilateral, a number oi' rings are slipped, which should i'it tightly on the stem. The (first) ring h has the names ot' two oi the months- January and February-suitably engraved or printed on its surfaces, as shown in Fig. 4 of the drawings. The ring c has the names of seven months engraved on it, arranged as shown in Fig. et ot' the drawings, and ring d has the names of three months engraved on it-viz., July, December, and November-also shown in Fig. 4. These three rings, b, c, and d, contain the names oi the twelve months. The next ring, e, has the names of the days of the week engraved on its surfaces, and this ring is put on the stem A in the order shown in Fig. l.

A cap, B, having a column of iigurcs from l to 3l, is now put over the end ot' the stem A and completes the calendar. The figures on cap B run spirally round the cap B from one end to the other, Fig. l, commencing on the end next to the ring e, as shown in Figs. l and 4 ot the drawings. The cap B is conlined in its place on stem A by a spring, g, (shown in Fig. 2,) which presses outward against the inside surface ot' cap B and prelvents this cap from casually slipping oit.

The calendar isnow adjusted in the following manner: The slide-sections b c d, which are the twelve lunar months, are slipped on the stem A so that February, March, and November will come in the same space, except for leap-year. Then January, April, and July must be in the same space. These sec tions b c d may remain in one position, eX- cept the above-described adjustment for leapyear. The section or ring e, on which are marked the days of the week, is adjusted each year on lst of January by placing the proper day in the same space with the word Jannary on ring b. This section c remains thus for one year, and indicates for this length of time the day of the week on which each month begins. Find the month, and oppo site in the same space will be the day on which it occurs.

The section or cap i3, on which are engraved the days of the month, arranged in a spiral column, is adjusted on the first day of each month by placing the space containing the iigures l 8 l5 22 29 opposite the proper month. Then these adjustments arc made, as described, the day of the week and month are readily found in the saine space. The day of the week on which any month begins is readily found opposite the month in the same space. If January stands opposite April and July, it is leap-year; otherwise not. To find the number of days in any month, look;

Vfor che next succeeding' month. 1f iL- stands in the saine space, Jshe month has twentyeight days, and add one day for every space the succeeding month is removed from it.

This calendar is more easily read than dialealendars, as the eye is not Confused by a. profusion of letters and igures, as only those which oeeur in one space are seen at one time. Having thus described my invention, I do not claim, broadly, the application of a Weekly Calendar to i pencil-oase or like article; but

'hat I do elziiin as new, and desire lo se- 'eure by Letters Patent, is

J. N. DUDLEY.

\\"itnesses:

R. B. DUDIJEY, S. L. SKINNER. 

